Mechanism for moving the lay and releasing the pressure on the binders



Oct- 6, 1925- 1,555,863

L. .1. LUDWlG MECHANISM FOR MOVING THE LAY AND RELEASING THE PRESSURE ON THE BINDERS Filed July 29. 1924 4 Sheets-Sheet 1 Laue; J

Oct; 6, 1925. 1,555,863

L. J. LUDWIG MECHANISM FOR MOVING THE LAY AND RELEASING THE PRESSURE ON THE BINDERS Filed July 29. 1924 4 Sheets-5mg 2 6 gave, HM

Laud? J Lady/y Oct. 6,

L. J. LUDWIG MECHANISM FOR MOVING THE LAY AND RELEASING THE PRESSURE 0" THE BINDERS 311mm I 01 6k 6H0: nu I 4 SheetaPSheot 5 I i l l l l mm Filed July 29. 1924 Louis Jl/udafly Oct. 6, 1925- L. J. LUDWIG MECHANISM FOR MOVING THE LAY AND RELEASING THE PRESSURE ON THE BINDERS Filed July 9. L924 4 Sheets-Sheet 4 Patented (let. 6, 1925.

v UNITED STATES 1,555,863 PATENT OFFICE.

LOUIS J. LUDWIG, or PHILADELPHIA, PENNSYLVANIA.

MECHANISM FOR MOVING THE LAY AND RELEASING THE PRESSURE ON THE IBINDERS.

Application filed July 29, 1924. Serial No. 728,844.

To all "iv/tom it may concern.

Be it known that 1, Louis J. Lnnwio, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new. and useful Improvements in Mechanism for Moving the Lay and Releasing the Pressure on the Binders, of which the following is a specification.

My invention relates to looms, more particularly to the mechanism which co-operates with the shuttle boxes to stop the loom in the absence of a shuttle in the oppositely aligned boxes, and the mechanism which swings the lay.

The first mentioned mechanism comprises a rockable rod having a finger on each end engaging a binder on each shuttle box, the rod being adapted to receive a slightrocking movement from the shuttle through the binder and finger when the shuttle is out of both boxes, and to transmit this rocking movement through parts connected there with to actuate the knock-off mechanism to stop the loom. A spring normally keeps the finger against the binder and the binder against the shuttle. To shoot the shuttle out of its box, considerable power is required to overcome the friction caused by the spring between the shuttle and the binder. The transmission of this power causes excessive wear.

The second mentioned mechanism which moves the lay consists of a crank connected to the lay by a connecting rod. It is highly essential for efiicient operation of loom that the lay, at the end of its swinging movement away from the woven cloth, shall have a slow movement, or a dwell, to give the shuttle sufficient time to pass across the warp threads into the box. The crank and connecting rod are capable of converting a rotary movement into an oscillatory movement which is slow at the end of each swing But this movement does not give the shuttle ample time to travel across the warp at the minimum speed. The minimum speed, at which the shuttle may travel to cross the warp in the time allowed by this slow movement of the lay, is far in excess of the speed at which the shuttle would travel if merely crossing the warp to reach the shuttle box. Obviously more power is required to shoot the shuttle across the warp at the first or high speed than at the second.

The total power required to overcome the binder against friction between the shuttle and the binder and to shoot the shuttle at high speed, is greater than the power required to operate the other parts of the loom.

The objects of my invention are to provide means which will reduce the amount of power necessary for efficient operation of attain in the following manner, reference being had to the accompanying drawings in which Figure 1 is a fragmentary plan view of a loom having my invention applied thereto,

Figure 2 a front view of the loom shown in Figure 1,

Figure 3 a section on line 33 of Figure 2, and

Figures 4 and 5 fragmentary views simi lar to Figure 3 illustrating the parts moved into other positions.

Referring to the drawings, 1 indicates a frame, 2 a lay sword pivoted to the frame at 3, and carrying shuttle boxes i slotted to receive the end of a picker stick 5 with the picker 6 thereon for shooting the shuttle P out of the loom. A binder 8, is pivoted at on each box and is adapted to retard the movement of a shuttle as it enters the box. The mechanism for stopping the loom is duplicated on each pair of aligned shuttle boxes .at opposite ends of the lay and but one will be described.

A protector rod 10 is rockably mounted on sword 2 and has a finger 11 on each end engaging binder 8. A spring 12 normally keeps finger 11 against binder 8 and the the shuttle through the medium of an arm 13 fixed to rod 10. A dagger 14 fixed to rod 10 is adapted to engage a slidable frog 15 having a tongue and groove connection with a block 16. A frog extension 17 is adapted to engage an arm 18 on a knock-off shaft 19 which is connected with suitable knock-off mechanism for stopping the loom. A crank 20, rotatable in frame 1, is adaptedto be connected to lay sword 2 for imparting a swinging movement thereto. The above des ribed mechanism'forms no part of my invention.

ill

My invention is adapted to release the pressure from between shuttle '7 and to reduce the friction between the shuttle and the binder when the shuttle is about to be shot out of the box, and to impart a swinging movement to the lay sword which is slow at the end of the swing.

To carry out my invention, I have shown mechanism in its simplest form which is connected to the frame 1, the lay sword 2, the finger 11 and crank 20, but other mechanism for performing the same. function may be substituted and connected in various ways. The mechanism shown includes a member 21 having its lower end pivoted to the frame at 22; a link 23 pivoted to the lay sword at 24; a pivot pin 25 connecting the link and the upper end of member 21; a bell crank lever 26 fulcrumed on pivot pin 25 and having one arm 27 connected with crank 20, and flexible straps 28 connecting the other arm 29 with finger 11.

In operation when the crank turns to move lay sword 2 on its rearward beat from the position shown in Figure 8 to the position shown in Figure 4;, it rocks bell crank lever 26 on its fulcrum to the left. This movement swings lay sword 2 toward the crank and finger 11 away from binder-8. A continued movement of crank 20 to the position shown in Figure 5 will rock lever 26 to the right, will continue to move lay sword 2 away from the woven cloth, and will allow the finger to be swung in the reverse direction toward the binder. Then this position is reached the finger will just touch the binder without placing any pressure thereon and there will be no friction between the binder and the shuttle. At this position the shuttle is shot out of the box. During the time (a fraction of a second) the shuttle passes across the warp threads and before it reaches the oppositely aligned box, crank 20 will move to the dot-andda'sh line position shown in Figure 5 or thereabouts bringing lay sword 2 to the dotand-dash position shown at 30 and then back to its full line position, and releasing finger 11 to allow the full force of spring 12 to be transmitted to binder 8 of the oppositely aligned shuttle box. By this time the shuttle is about to enter the oppositely aligned shuttle box. der pressure, will retard the speed of the shuttle before it strikes the picker. Briefly the bell crank lever causes the pressure to be released from binder 8 as the shuttle is shot out of the box, and to be placed on the binder of the oppositely aligned box as the shuttle enters the same so as toretard its speed before it strikes the picker. This action practically eliminates the friction between the binder and the shuttle as it is driven out of the box by the picker stick and consequently less power is required for driv Its binder, being unthreads into the oppositely aligned shuttle box at minimum speed, and consequently less power is required to drive the shuttle at such slow speed.

The bell crank lever 2.. link 23, member 21 and straps 28, provide a simple construci tion, which moves lay sword 2, at the end of its beat from the woven cloth, at slow speed to give the shuttle ample time to pass across the warp threads at minimum speed, and practically eliminates the friction be tween the binder and the shuttle as it is driven out of its box, thus requiring less power to drive the shuttle out of the box and across the warp threads into the oppositely aligned box, causing less wear on the parts, less noise, and permitting the loom to be operated at a greater speed. 7

While I have described my invention as taking a particular form, it will be understood that the various parts may be changed without departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly com within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Let-- ters Patent is i 1. In a loom having a frame, a shuttle, a shuttle box, a binder, a protecting finger in engagement with the binder, a lay and a crank; a bell crank lever having one arm directly connected to the crank; connections between the other arm and the finger; a link connected with the fulcrum of the lever and with the lay, and means connecting the fulcrum of the bell crank lever with the frame, whereby the finger will be moved from the binder when the shuttle is shot out of the shuttle box.

2. In a loom having a frame, a binder, a protecting finger in engagement with the binder, a lay and a crank; a bell crank lever having one arm directly connected with the crank; flexible means connecting the other arm with the finger; a link connected to the fulcrum of the lever and the lay, and means connected with the fulcrum of the lever and ing one end pivoted to the frame for swinging in substantially the same direction as the lay; a link connecting the other end of the member with the lay; means pivotally connecting the link with the crank, and con nections between the finger whereby the finger and said means will be moved from the binder when the lay swings toward the crank.

4. In a loom having a frame, a binder, a protecting finger in engagement with the binder, a lay and a crank; a member having one end pivoted to the frame for swinging in substantially the same direction as the lay; a link connecting the other end of the member with the lay; a bell crank lever fulcrumed on the link and having one arm connected to the crank, and means connecting the other arm of the lever with the finger whereby the finger will be moved from the binder when the lay swings toward the crank.

5. In a loom having a frame, a binder, a protecting finger in engagement with the binder, a lay and a crank; a member having one end pivoted to the frame for swinging in substantially the same direction as the lay; a link connecting the other end of the member with the lay; a bell crank lever fulcrumed on the link and having one arm con nected to the crank, and a strap connecting the other arm of the lever with the finger whereby the finger will be moved from the binder when the lay swings toward the crank.

6. In a loom having a lay sword, a binder, a protecting finger in engagement with the binder, and a crank; a member having one end pivoted to the loom for swinging in substantially the same direction as the sword; a link pivotally connected with the other end of the member and to the sword; a bell crank lever fulcrumed on the pivotal connection of the link and the member and having one arm connected with the'crank, and a flexible strap connected with the other arm of the lever and the finger whereby the finger will be moved from the binder when the sword swings toward the crank.

7. In a loom having a lay and a crank; a member pivoted on one end for swinging in substantially the same direction as the lay; a link pivotally connected with the lay; means pivotally connected with the crank, and common means pivotally connecting the link, the other end of said member and said means.

8. In a loom having a lay and a crank; a member pivoted at one end for swinging in substantially the same direction as the lay; a link having one end pivoted to the lay; a pivot pin connecting the other end of the link and the other end of the member, and means pivoted on the pin and connected with the crank.

9. In a loom having a shuttle, a shuttle box, a binder in rear of the box, a lay, a protecting finger in rear of the lay engaging the binder, and a crank; a bell crank lever having one arm connected with the crank and the other arm substantially parallel to the finger; connections between said arm and the finger, and means connecting the fulcrum of the lever with the lay, whereby the finger will be kept disengaged from the binder when the shuttle is shot out of the shuttle box.

10. In a loom having a shuttle box, a binder in rear of the box, a lay, a protecting finger in rear of the lay engaging the binder, and a crank; a bell crank lever having one arm connected with the crank and the other arm substantially parallel to the finger; flexible means connecting said arm with the finger, and means connecting the fulcrum of the lever with the lay, whereby the finger will be moved from the binder when the lay swings toward the crank.

In testimony whereof I have signed my name to this specification.

LOUIS J. LUDWIG. 

